Find the missing numbers.
- U
- V
- W
- X
Pattern for right half of the circle.
19 + 2 = 21
19 + 4 = 23
For right half of the circle:
Centre number + Number at the second ring = Number at the outer ring
(a) U = 21 - 19 = 2
(b) V = 19 + 6 = 25
Pattern for left half of the circle.
19 - 4 = 15
19 - 13 = 6
For left half of the circle:
Centre number - Number at the second ring = Number at the outer ring
(c) W = 19 - 17 = 2
(d) X = 19 - 12 = 7
Answer(s): (a) 2; (b) 25; (c) 2; (d) 7